: Rubber bands, binder clips, paper clips, and tape.
: Instructions are provided for building simple optical and acoustic devices, such as a periscope made from a toothpaste box or a sound-amplifying cone from a plastic bottle. Mini Weapons of Mass Destruction 2: Build a Sec...
: Safety scissors or hobby knives, pliers, and markers. Safety Emphasis : Rubber bands, binder clips, paper clips, and tape